A respectable co-ed professional chemistry fraternity. While many fraternities are hell-bent on drugs and alcohol, the brothers of Alpha chi sigma are truly dedicated to academics. There are many professors and Nobel Laureates who are brothers.

frat boy: I'm gonna get laid tonight at the party. What are you doing?
alpha chi sigma brother: Studying for my o-chem final and finishing up my research. You know, gotta get into med school.